Back Pain after riding Harley Davidson Road King

Somebody said that he has a back pain after ride his Harley Davidson RoadKing. He complained after 30 minutes of driving, the complaint was lost when he put his foot in Passanger Foot Pegs. Previously he was riding a Triumph is still strong for 4 hours.

This problem probably could have happened to us. In order for us to avoid trial we learned again that there is possible errors.